<template>
  <div class="person">
    <h1>中国</h1>
    <h2 ref="title2">广东省</h2>
    <h3>汕尾市</h3>
    <button @click="showLog">点我输出h2</button>
  </div>
</template>

<script lang="ts" setup name="Person">
  import { ref, defineExpose } from "vue";

  //创建一个title2,用于存储ref标记的内容
  let title2 = ref();
  let a = ref(0);
  let b = ref(1);
  let c = ref(2);

  function showLog() {
    console.log(title2.value);
  }

  defineExpose({ a, b, c });
</script>

<style scoped>
  .person {
    background-color: aqua;
    box-shadow: 0 0 10px;
    border-radius: 10px;
    padding: 20px;
  }

  button {
    margin-left: 5px;
    margin-right: 5px;
  }
</style>
